Doc No: OMM50002312 
Rev:  C Page 19 of 54 
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7.0  Inspection and Preventative Maintenance Chart 
 
Routine maintenance is an essential part of any successful pump installation. Properly 
maintained FMC pumps are designed to offer years of trouble-free service. 
Regular maintenance and inspection will keep your pump operating at peak 
performance. FMC pumps have been carefully engineered to minimize maintenance 
requirements and simplify these tasks when they are required. Regular inspections 
allow operators to become familiar with normal pump operation so they can recognize 
the signals of potential problems and schedule maintenance. The maintenance chart in 
Table 3 shown below should be used as a guideline only. Many applications will require 
adjustment of the intervals shown in this chart for severe or unusual operating 
conditions. 
 
Table 3: W11 Maintenance Schedule 
Drain and refill with new oil after first 100 hours of operation. 
Ensure that the magnetic drain plugs are cleaned to remove 
debris. 
Clean if Required. The amount of material in the strainer will 
determine the interval of cleaning. 
General inspection of pump and system to check for proper 
operation of equipment. 
Check the cylinder liner area of the pump for signs of leakage. 
Replace piston cups if leakage becomes excessive. 
Required for shutdown when pumping fluids that may harden 
or corrode the pump if left inside once stopped. 
Ensure that the oil is at proper level and has not been 
contaminated by pumpage or condensation. 
Drain and refill with new oil. Clean magnetic drain plugs. 
Check the cylinder cover bolts with a torque wrench to ensure 
they are within specification. 
Check the connecting rod bolts with a torque wrench to 
ensure they are within specification. This should be done in 
conjunction with oil change.